Right-angle needle-punching mechanisms and needle-punching devices

Abstract

A right-angle needle-punching mechanism and a needle-punching device are provided. The right-angle needle-punching mechanism includes a first right-angle needle-punching assembly and a second right-angle needle-punching assembly, a position adjusting assembly configured to drive the first right-angle needle-punching assembly and the second right-angle needle-punching assembly approach or move away from the preform, and an angle adjustment assembly configured to change needle-punching angles of the first right-angle needle-punching assembly and the second right-angle needle-punching assembly. The angle adjustment assembly, the first right-angle needle-punching assembly, and the second right-angle needle-punching assembly are arranged on the position adjusting assembly. The first right-angle needle-punching assembly includes a first right-angle needle plate, the second right-angle needle-punching assembly includes a second right-angle needle plate, and the first right-angle needle plate and the second right-angle needle plate perform needle punching on respective sides of the right-angle part of the preform.

What is claimed is: 
     
         1 . A right-angle needle-punching mechanism, the right-angle needle-punching mechanism being fixed on a main frame of a needle-punching device for performing needle punching on a right-angle part of a preform, wherein the right-angle needle-punching mechanism includes a first right-angle needle-punching assembly, a second right-angle needle-punching assembly, a position adjusting assembly configured to drive the first right-angle needle-punching assembly and the second right-angle needle-punching assembly to approach or move away from the preform, and an angle adjustment assembly configured to change needle-punching angles of the first right-angle needle-punching assembly and the second right-angle needle-punching assembly, the angle adjustment assembly, the first right-angle needle-punching assembly, and the second right-angle needle-punching assembly are arranged on the position adjusting assembly, the first right-angle needle-punching assembly includes a first right-angle needle plate, the second right-angle needle-punching assembly includes a second right-angle needle plate, the first right-angle needle plate and the second right-angle needle plate perform needle punching on respective sides of the right-angle part of the preform;
 the main frame includes a first door-shaped frame and a second door-shaped frame, the first door-shaped frame and the second door-shaped frame being arranged opposite to each other; the position adjusting assembly including two right-angle sliding plates located between the first door-shaped frame and the second door-shaped frame, a connecting plate fixedly connecting the two right-angle sliding plates, and a right-angle adjustment cylinder fixedly attached to an outer surface of at least one of the first door-shaped frame and the second door-shaped frame, the right-angle adjustment cylinder being connected to the connecting plate to drive the two right-angle sliding plates to move along a right-angle sliding rail arranged on inner surfaces of the first door-shaped frame and the second door-shaped frame;   the angle adjustment assembly includes a driving member and an adjustment member, the first right-angle needle-punching assembly further including a first right-angle cylinder and a first right-angle push rod connected to the first right-angle cylinder and the first right-angle needle plate, respectively, and the second right-angle needle-punching assembly further including a second right-angle cylinder and a second right-angle push rod connected to the second right-angle cylinder and the second right-angle needle plate, respectively, the first right-angle cylinder and the second right-angle cylinder being connected to the adjustment member, respectively, and the driving member driving the adjustment member to adjust an angle between the first right-angle cylinder and the second right-angle cylinder.   
     
     
         2 . The right-angle needle-punching mechanism according to  claim 1 , wherein the driving member includes a first bi-directional driving cylinder fixed to a top surface of the connecting plate and a second bi-directional driving cylinder fixed to a bottom surface of the connecting plate,
 both ends of the first bi-directional driving cylinder are connected to a first driving rod, respectively,   both ends of the second bi-directional driving cylinder are connected to a second driving rod, respectively,   one end of the first driving rod away from the first bi-directional driving cylinder is connected to the adjustment member, one end of the second driving rod away from the second bi-directional driving cylinder is connected to the adjustment member, and   the first bi-directional driving cylinder and the second bi-directional driving cylinder synergistically drive the adjustment member to adjust the angle between the first right-angle cylinder and the second right-angle cylinder.   
     
     
         3 . The right-angle needle-punching mechanism according to  claim 2 , wherein the adjustment member includes a moving rod coupled to the first driving rod, a second U-shaped plate member coupled to the second driving rod with its opening facing away from the first driving rod, a first U-shaped plate member located between the moving rod and the second U-shaped plate member with its opening facing the second U-shaped plate member, and two movable plates located in the second U-shaped plate member,
 the first U-shaped plate member is fixedly connected to the second U-shaped plate member,   the two movable plates are rotationally connected to the second U-shaped plate member,   the first right-angle cylinder and the second right-angle cylinder are located between the two movable plates and fixedly connected to the two movable plates, respectively,   a bottom end of the moving rod is fixedly connected to a first pull rod which is parallel to the first driving rod and passes through a bottom plate of the first U-shaped plate member,   one end of the first pull rod away from the moving rod is hinged to a second pull rod, one end of the second pull rod away from the first pull rod is rotationally connected to a push rod, and both ends of the push rod along its longitudinal axis are fixedly connected to the two movable plates, respectively;   the second U-shaped plate member slides on the right-angle sliding plates in a direction parallel to the first driving rod.   
     
     
         4 . The right-angle needle-punching mechanism according to  claim 3 , wherein a sliding slot parallel to the first driving rod is provided on an outer surface of a side plate of the second U-shaped plate member, and a support rail that matches the sliding slot is provided on an inner surface of the right-angle sliding plates. 
     
     
         5 . A needle-punching device, including a base and a main frame fixed to the base, wherein the main frame is provided with an upper needle-punching mechanism for performing needle punching on an upper surface of a preform, a lateral needle-punching mechanism for performing needle punching on a side surface of the preform, and the right-angle needle-punching mechanism as claimed in  claim 1  for performing the needle punching on the right-angle part of the preform. 
     
     
         6 . The needle-punching device according to  claim 5 , wherein the lateral needle-punching mechanism is symmetrically arranged on the main frame, and the right-angle needle-punching mechanism is symmetrically arranged on the main frame. 
     
     
         7 . The needle-punching device according to  claim 5 , wherein the lateral needle-punching mechanism includes at least one lateral cylinder that is horizontally disposed, at least one lateral push rod, and a lateral needle plate, the at least one lateral cylinder is fixed to a lateral sliding plate, and the lateral sliding plate approaches or moves away from a needle-punching mold under an action of a lateral adjustment cylinder fixed and horizontally provided on the main frame. 
     
     
         8 . The needle-punching device according to  claim 5 , wherein the needle-punching device further includes a moving platform that supports and drives a needle-punching mold, the moving platform includes a platform body, a guide groove is provided on a bottom surface of the platform body, the guide groove cooperates with a moving guide rail provided on the base to enable the platform body to move along the moving guide rail to adjust a needle-punching position of the preform.